#!/usr/bin/env python
# -*- coding: UTF-8 -*-

import logging
from django.db import DatabaseError
from redis.exceptions import RedisError
from rest_framework.response import Response
from rest_framework import status
from rest_framework.views import exception_handler as drf_exceptions_handler

logger = logging.getLogger("django")


def exception_handler(exc, context):
    """
    自定义捕获异常
    :param exc: 异常
    :param context: 抛出异常的上下文
    :return: Response响应对象
    """
    response = drf_exceptions_handler(exc, context)  # 把异常先传入到rest_framework中看看是否是rest_framework的异常并拦截
    if response is None:
        view = context["view"]
        if isinstance(exc, DatabaseError) or isinstance(exc, RedisError):
            # 数据库异常
            logger.error('[%s] %s' % (view, exc))
            response = Response({'message': '服务器内部错误'}, status=status.HTTP_507_INSUFFICIENT_STORAGE)
    return response
